[libxml2] Fix --with-schemas --without-xpath build

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 884e142dc5c6d503ab90dbe231183ae1a134c5f7
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Thu Sep 1 22:44:02 2022 +0200

    Fix --with-schemas --without-xpath build
    
    xmlXPathInit must be called for schemas.

 parser.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)
---
diff --git a/parser.c b/parser.c
index 63cc9faa..0eb1af18 100644
--- a/parser.c
+++ b/parser.c
@@ -71,6 +71,9 @@
 #include <libxml/xmlschemastypes.h>
 #include <libxml/relaxng.h>
 #endif
+#if defined(LIBXML_XPATH_ENABLED) || defined(LIBXML_SCHEMAS_ENABLED)
+#include <libxml/xpath.h>
+#endif
 
 #include "private/buf.h"
 #include "private/enc.h"
@@ -14700,10 +14703,6 @@ xmlSetEntityReferenceFunc(xmlEntityReferenceFunc func)
  *                                                                     *
  ************************************************************************/
 
-#ifdef LIBXML_XPATH_ENABLED
-#include <libxml/xpath.h>
-#endif
-
 static int xmlParserInitialized = 0;
 
 /**
@@ -14745,7 +14744,7 @@ xmlInitParser(void) {
        htmlInitAutoClose();
        htmlDefaultSAXHandlerInit();
 #endif
-#ifdef LIBXML_XPATH_ENABLED
+#if defined(LIBXML_XPATH_ENABLED) || defined(LIBXML_SCHEMAS_ENABLED)
        xmlXPathInit();
 #endif
        xmlParserInitialized = 1;